A Comparative Study on the Life Cycles of the Leaf Miners Liriomyza trifolii (Burgesss) and Liriomyza sativae (Blanchard) (Agromyzidae: Diptera)*
Abstract
The life cycles of the leaf miners, Liriomyza trifolii (Burgess)
and Liriomyza sativae (Blanchard), were studied in a growth chamber
(Temp, 25 1C; R.H. 75 5%; L/D 12 hL/12 hD and 3000 – 4000
LUX) at CIRAD, Montpellier, France. The host plant used was haricot
bean (Phaseolus vulgaris). The egg incubation period of both species
lasted for two days. Highly significant differences (P<0.01) were recorded
between the number of feeding punctures caused by L. trifolii and L.
sativae. Differences between the larval periods and number of emerging
adults were not significant. Upon hatching, during 1996, the number of
larvae of L. trifolii was significantly higher than that of L. sativae, but the
total life span of L. sativae was significantly longer than that of L. trifolii.